./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/cstrncmp-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/cstrncmp-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 68c0bffd453ebe82049c8a49e9fddf725cfb9d95 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:20,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:20,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:20,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:20,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:20,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:20,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:20,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:20,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:20,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:20,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:20,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:20,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:20,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:20,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:20,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:20,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:20,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:20,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:20,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:20,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:20,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:20,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:20,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:20,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:20,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:20,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:20,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:20,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:20,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:20,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:20,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:20,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:20,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:20,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:20,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:20,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:20,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:20,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:20,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:20,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:20,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:56:20,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:20,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:20,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:20,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:20,688 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:20,688 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:56:20,689 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:56:20,689 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:56:20,689 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:56:20,689 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:56:20,690 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:56:20,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:20,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:20,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:20,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:20,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:56:20,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:56:20,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:56:20,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:20,692 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:56:20,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:20,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:56:20,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:20,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:20,693 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:56:20,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:20,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:20,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:20,694 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:56:20,697 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:56:20,697 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68c0bffd453ebe82049c8a49e9fddf725cfb9d95 [2020-11-28 02:56:21,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:21,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:21,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:21,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:21,084 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:21,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/cstrncmp-alloca-2.i [2020-11-28 02:56:21,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/data/f5aaee019/b511e95ed09a401c97e90bfb4a09c57d/FLAG9555f0672 [2020-11-28 02:56:21,782 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:21,782 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/sv-benchmarks/c/termination-memory-alloca/cstrncmp-alloca-2.i [2020-11-28 02:56:21,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/data/f5aaee019/b511e95ed09a401c97e90bfb4a09c57d/FLAG9555f0672 [2020-11-28 02:56:22,050 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/data/f5aaee019/b511e95ed09a401c97e90bfb4a09c57d [2020-11-28 02:56:22,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:22,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:22,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:22,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:22,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42644067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:22,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:22,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,456 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:22,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,580 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:22,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22 WrapperNode [2020-11-28 02:56:22,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:22,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:22,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:22,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:22,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:22,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:22,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:22,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:23,132 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:23,132 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 02:56:23,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:23 BoogieIcfgContainer [2020-11-28 02:56:23,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:23,135 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:56:23,135 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:56:23,138 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:56:23,139 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:23,139 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:22" (1/3) ... [2020-11-28 02:56:23,141 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287d77e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:23, skipping insertion in model container [2020-11-28 02:56:23,141 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:23,141 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (2/3) ... [2020-11-28 02:56:23,142 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287d77e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:23, skipping insertion in model container [2020-11-28 02:56:23,142 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:23,142 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:23" (3/3) ... [2020-11-28 02:56:23,143 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrncmp-alloca-2.i [2020-11-28 02:56:23,203 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:56:23,203 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:56:23,204 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:56:23,204 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:23,204 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:23,205 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:56:23,205 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:23,205 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:56:23,221 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-28 02:56:23,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:23,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:23,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:23,258 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:23,258 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:23,258 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:56:23,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-28 02:56:23,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:23,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:23,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:23,264 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:23,264 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:23,273 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~malloc15.base, main_#t~malloc15.offset, main_#t~malloc16.base, main_#t~malloc16.offset, main_#t~nondet17, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet13;havoc main_#t~nondet13;main_~length2~0 := main_#t~nondet14;havoc main_#t~nondet14; 8#L565true assume !(main_~length1~0 < 1); 13#L565-2true assume !(main_~length2~0 < 1); 7#L568-1true call main_#t~malloc15.base, main_#t~malloc15.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc15.base, main_#t~malloc15.offset;call main_#t~malloc16.base, main_#t~malloc16.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc16.base, main_#t~malloc16.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_#t~nondet17;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~short7, cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset, cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset, cstrncmp_#t~post2, cstrncmp_#t~mem3, cstrncmp_#t~mem4, cstrncmp_#t~short5, cstrncmp_#t~mem10, cstrncmp_#t~mem11, cstrncmp_#t~ite12, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n, cstrncmp_~uc1~0, cstrncmp_~uc2~0;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n;havoc cstrncmp_~uc1~0;havoc cstrncmp_~uc2~0; 17#L550true assume !(0 == cstrncmp_~n); 4#L552-5true [2020-11-28 02:56:23,274 INFO L796 eck$LassoCheckResult]: Loop: 4#L552-5true cstrncmp_#t~post2 := cstrncmp_~n;cstrncmp_~n := cstrncmp_#t~post2 - 1;cstrncmp_#t~short5 := cstrncmp_#t~post2 > 0; 14#L552-1true assume cstrncmp_#t~short5;call cstrncmp_#t~mem3 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);call cstrncmp_#t~mem4 := read~int(cstrncmp_~s2.base, cstrncmp_~s2.offset, 1);cstrncmp_#t~short5 := cstrncmp_#t~mem3 == cstrncmp_#t~mem4; 20#L552-3true assume !!cstrncmp_#t~short5;havoc cstrncmp_#t~short5;havoc cstrncmp_#t~post2;havoc cstrncmp_#t~mem3;havoc cstrncmp_#t~mem4;cstrncmp_#t~short7 := 0 == cstrncmp_~n; 11#L553true assume cstrncmp_#t~short7; 15#L553-2true assume !cstrncmp_#t~short7;havoc cstrncmp_#t~short7;havoc cstrncmp_#t~mem6;cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post8.base, 1 + cstrncmp_#t~post8.offset;havoc cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset;cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post9.base, 1 + cstrncmp_#t~post9.offset;havoc cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset; 4#L552-5true [2020-11-28 02:56:23,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,284 INFO L82 PathProgramCache]: Analyzing trace with hash 889572238, now seen corresponding path program 1 times [2020-11-28 02:56:23,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126741800] [2020-11-28 02:56:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,553 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,559 INFO L82 PathProgramCache]: Analyzing trace with hash 52587176, now seen corresponding path program 1 times [2020-11-28 02:56:23,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423212868] [2020-11-28 02:56:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:23,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423212868] [2020-11-28 02:56:23,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:23,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:23,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193675740] [2020-11-28 02:56:23,676 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-28 02:56:23,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:23,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:23,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:23,696 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-11-28 02:56:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:23,738 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2020-11-28 02:56:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:23,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2020-11-28 02:56:23,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:23,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 14 transitions. [2020-11-28 02:56:23,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 02:56:23,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 02:56:23,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2020-11-28 02:56:23,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:23,751 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-28 02:56:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2020-11-28 02:56:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 02:56:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 02:56:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2020-11-28 02:56:23,782 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-28 02:56:23,782 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-28 02:56:23,782 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:56:23,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2020-11-28 02:56:23,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:23,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:23,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:23,787 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:23,787 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:23,788 INFO L794 eck$LassoCheckResult]: Stem: 52#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 46#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~malloc15.base, main_#t~malloc15.offset, main_#t~malloc16.base, main_#t~malloc16.offset, main_#t~nondet17, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet13;havoc main_#t~nondet13;main_~length2~0 := main_#t~nondet14;havoc main_#t~nondet14; 47#L565 assume !(main_~length1~0 < 1); 53#L565-2 assume !(main_~length2~0 < 1); 54#L568-1 call main_#t~malloc15.base, main_#t~malloc15.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc15.base, main_#t~malloc15.offset;call main_#t~malloc16.base, main_#t~malloc16.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc16.base, main_#t~malloc16.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_#t~nondet17;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~short7, cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset, cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset, cstrncmp_#t~post2, cstrncmp_#t~mem3, cstrncmp_#t~mem4, cstrncmp_#t~short5, cstrncmp_#t~mem10, cstrncmp_#t~mem11, cstrncmp_#t~ite12, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n, cstrncmp_~uc1~0, cstrncmp_~uc2~0;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n;havoc cstrncmp_~uc1~0;havoc cstrncmp_~uc2~0; 56#L550 assume !(0 == cstrncmp_~n); 50#L552-5 [2020-11-28 02:56:23,788 INFO L796 eck$LassoCheckResult]: Loop: 50#L552-5 cstrncmp_#t~post2 := cstrncmp_~n;cstrncmp_~n := cstrncmp_#t~post2 - 1;cstrncmp_#t~short5 := cstrncmp_#t~post2 > 0; 51#L552-1 assume cstrncmp_#t~short5;call cstrncmp_#t~mem3 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);call cstrncmp_#t~mem4 := read~int(cstrncmp_~s2.base, cstrncmp_~s2.offset, 1);cstrncmp_#t~short5 := cstrncmp_#t~mem3 == cstrncmp_#t~mem4; 55#L552-3 assume !!cstrncmp_#t~short5;havoc cstrncmp_#t~short5;havoc cstrncmp_#t~post2;havoc cstrncmp_#t~mem3;havoc cstrncmp_#t~mem4;cstrncmp_#t~short7 := 0 == cstrncmp_~n; 48#L553 assume !cstrncmp_#t~short7;call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~short7 := 0 == cstrncmp_#t~mem6; 49#L553-2 assume !cstrncmp_#t~short7;havoc cstrncmp_#t~short7;havoc cstrncmp_#t~mem6;cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post8.base, 1 + cstrncmp_#t~post8.offset;havoc cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset;cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post9.base, 1 + cstrncmp_#t~post9.offset;havoc cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset; 50#L552-5 [2020-11-28 02:56:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,799 INFO L82 PathProgramCache]: Analyzing trace with hash 889572238, now seen corresponding path program 2 times [2020-11-28 02:56:23,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245477745] [2020-11-28 02:56:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,871 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,875 INFO L82 PathProgramCache]: Analyzing trace with hash 52587238, now seen corresponding path program 1 times [2020-11-28 02:56:23,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53568834] [2020-11-28 02:56:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,923 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,967 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2120298631, now seen corresponding path program 1 times [2020-11-28 02:56:23,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248648373] [2020-11-28 02:56:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:24,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:24,075 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:24,494 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-11-28 02:56:24,948 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2020-11-28 02:56:25,085 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-28 02:56:25,099 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:25,100 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:25,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:25,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:25,102 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:25,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:25,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:25,107 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:25,107 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrncmp-alloca-2.i_Iteration2_Lasso [2020-11-28 02:56:25,107 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:25,108 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:25,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,616 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-11-28 02:56:25,855 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-11-28 02:56:25,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:26,945 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:26,955 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:26,969 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:27,024 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:27,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:27,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:27,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:27,026 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 02:56:27,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:27,030 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 02:56:27,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:27,034 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:27,062 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:27,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:27,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:27,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:27,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:27,116 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:27,116 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:27,143 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:27,438 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2020-11-28 02:56:27,438 INFO L444 ModelExtractionUtils]: 27 out of 46 variables were initially zero. Simplification set additionally 16 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d909c49-a499-4f55-a454-e892bead888d/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:27,447 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:27,452 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:56:27,452 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:27,453 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc16.base)_1, ULTIMATE.start_cstrncmp_~s1.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc16.base)_1 - 1*ULTIMATE.start_cstrncmp_~s1.offset Supporting invariants [] [2020-11-28 02:56:27,597 INFO L297 tatePredicateManager]: 14 out of 16 supporting invariants were superfluous and have been removed [2020-11-28 02:56:27,610 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:56:27,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:27,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-28 02:56:27,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:27,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 02:56:27,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:27,799 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-11-28 02:56:27,799 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 4 Second operand 5 states. [2020-11-28 02:56:27,930 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 4. Second operand 5 states. Result 25 states and 31 transitions. Complement of second has 7 states. [2020-11-28 02:56:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 02:56:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-11-28 02:56:27,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 5 letters. [2020-11-28 02:56:27,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 11 letters. Loop has 5 letters. [2020-11-28 02:56:27,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 10 letters. [2020-11-28 02:56:27,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 31 transitions. [2020-11-28 02:56:27,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:27,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 27 transitions. [2020-11-28 02:56:27,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-28 02:56:27,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-28 02:56:27,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 27 transitions. [2020-11-28 02:56:27,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:56:27,943 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-11-28 02:56:27,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 27 transitions. [2020-11-28 02:56:27,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-28 02:56:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 02:56:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2020-11-28 02:56:27,946 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-11-28 02:56:27,946 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-11-28 02:56:27,947 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:56:27,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2020-11-28 02:56:27,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:27,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:27,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:27,948 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:27,948 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:27,949 INFO L794 eck$LassoCheckResult]: Stem: 216#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 210#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~malloc15.base, main_#t~malloc15.offset, main_#t~malloc16.base, main_#t~malloc16.offset, main_#t~nondet17, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet13;havoc main_#t~nondet13;main_~length2~0 := main_#t~nondet14;havoc main_#t~nondet14; 211#L565 assume !(main_~length1~0 < 1); 221#L565-2 assume !(main_~length2~0 < 1); 222#L568-1 call main_#t~malloc15.base, main_#t~malloc15.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc15.base, main_#t~malloc15.offset;call main_#t~malloc16.base, main_#t~malloc16.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc16.base, main_#t~malloc16.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_#t~nondet17;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~short7, cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset, cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset, cstrncmp_#t~post2, cstrncmp_#t~mem3, cstrncmp_#t~mem4, cstrncmp_#t~short5, cstrncmp_#t~mem10, cstrncmp_#t~mem11, cstrncmp_#t~ite12, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n, cstrncmp_~uc1~0, cstrncmp_~uc2~0;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n;havoc cstrncmp_~uc1~0;havoc cstrncmp_~uc2~0; 224#L550 assume !(0 == cstrncmp_~n); 228#L552-5 cstrncmp_#t~post2 := cstrncmp_~n;cstrncmp_~n := cstrncmp_#t~post2 - 1;cstrncmp_#t~short5 := cstrncmp_#t~post2 > 0; 218#L552-1 [2020-11-28 02:56:27,949 INFO L796 eck$LassoCheckResult]: Loop: 218#L552-1 assume !cstrncmp_#t~short5; 225#L552-3 assume !!cstrncmp_#t~short5;havoc cstrncmp_#t~short5;havoc cstrncmp_#t~post2;havoc cstrncmp_#t~mem3;havoc cstrncmp_#t~mem4;cstrncmp_#t~short7 := 0 == cstrncmp_~n; 212#L553 assume !cstrncmp_#t~short7;call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~short7 := 0 == cstrncmp_#t~mem6; 213#L553-2 assume !cstrncmp_#t~short7;havoc cstrncmp_#t~short7;havoc cstrncmp_#t~mem6;cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post8.base, 1 + cstrncmp_#t~post8.offset;havoc cstrncmp_#t~post8.base, cstrncmp_#t~post8.offset;cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post9.base, 1 + cstrncmp_#t~post9.offset;havoc cstrncmp_#t~post9.base, cstrncmp_#t~post9.offset; 217#L552-5 cstrncmp_#t~post2 := cstrncmp_~n;cstrncmp_~n := cstrncmp_#t~post2 - 1;cstrncmp_#t~short5 := cstrncmp_#t~post2 > 0; 218#L552-1 [2020-11-28 02:56:27,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935627, now seen corresponding path program 1 times [2020-11-28 02:56:27,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:27,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488952308] [2020-11-28 02:56:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:28,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:28,016 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:28,016 INFO L82 PathProgramCache]: Analyzing trace with hash 57448140, now seen corresponding path program 1 times [2020-11-28 02:56:28,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:28,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349211307] [2020-11-28 02:56:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:28,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349211307] [2020-11-28 02:56:28,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:28,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:28,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646596692] [2020-11-28 02:56:28,052 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-28 02:56:28,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:28,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:28,053 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-28 02:56:28,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:28,073 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-11-28 02:56:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:28,075 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-11-28 02:56:28,076 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:28,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2020-11-28 02:56:28,076 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:56:28,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:56:28,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:56:28,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:28,077 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:28,077 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:28,077 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:28,077 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:56:28,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:28,077 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:28,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:56:28,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:28 BoogieIcfgContainer [2020-11-28 02:56:28,085 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:56:28,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:28,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:28,086 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:28,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:23" (3/4) ... [2020-11-28 02:56:28,089 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:56:28,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:28,092 INFO L168 Benchmark]: Toolchain (without parser) took 6036.14 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 55.0 MB in the beginning and 47.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 57.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:28,092 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:28,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.00 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 54.8 MB in the beginning and 78.5 MB in the end (delta: -23.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:28,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.87 ms. Allocated memory is still 111.1 MB. Free memory was 78.5 MB in the beginning and 76.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:28,097 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 111.1 MB. Free memory was 76.4 MB in the beginning and 75.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:28,102 INFO L168 Benchmark]: RCFGBuilder took 475.94 ms. Allocated memory is still 111.1 MB. Free memory was 75.0 MB in the beginning and 57.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:28,103 INFO L168 Benchmark]: BuchiAutomizer took 4950.10 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 57.5 MB in the beginning and 48.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:28,103 INFO L168 Benchmark]: Witness Printer took 4.41 ms. Allocated memory is still 134.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:28,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.00 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 54.8 MB in the beginning and 78.5 MB in the end (delta: -23.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.87 ms. Allocated memory is still 111.1 MB. Free memory was 78.5 MB in the beginning and 76.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.30 ms. Allocated memory is still 111.1 MB. Free memory was 76.4 MB in the beginning and 75.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 475.94 ms. Allocated memory is still 111.1 MB. Free memory was 75.0 MB in the beginning and 57.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4950.10 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 57.5 MB in the beginning and 48.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.41 ms. Allocated memory is still 134.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] + -1 * s1 and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 4.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 21 states and ocurred in iteration 2. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 49 SDtfs, 14 SDslu, 39 SDs, 0 SdLazy, 19 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital231 mio100 ax107 hnf99 lsp81 ukn85 mio100 lsp47 div100 bol100 ite100 ukn100 eq195 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 393ms VariablesStem: 14 VariablesLoop: 10 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...